#### Answer

$y$; $x$

#### Work Step by Step

RECALL:
The slope can be interpreted as the average rate of change in the variable $y$ with respect to the variable $x$.
Thus, the missing expressions in the given statement are $y$ and $x$, respectively.

Published by
Pearson

ISBN 10:
0-13446-914-3

ISBN 13:
978-0-13446-914-0

$y$; $x$

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